package Operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        int delIndex = 0;
        System.out.println("删除图书");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要删除的图书的名字：");
        String name = scanner.nextLine();
        int currentSize = bookList.getUsedSize();
        int i = 0;
        for (; i < currentSize; i++) {
           Book book = bookList.getBook(i);
           if (book.getName().equals(name)){
               delIndex = i;
               break;
           }
        }
        if (i == currentSize){
            System.out.println("找不到你要删除的书籍！");
            return;
        }
        for (int j = delIndex; j < currentSize-1; j++) {
            Book book1 = bookList.getBook(j+1);
            bookList.setBooks(j,book1);
        }
        bookList.setBooks(currentSize-1,null);
        bookList.setUsedSize(currentSize-1);
        System.out.println("删除图书成功！");

    }
}
